package com.chong.struct;

import java.util.Scanner;

public class ifDemo3 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        //考试分数大于6日就是及格，小于60分就不及格。
        System.out.println("请输入您的成绩");

        int score = scanner.nextInt();

        if (score == 100) {
            System.out.println("满分");
        } else if (score < 100 && score >= 90) {
            System.out.println("A");
        } else if (score < 90 && score >= 80) {
            System.out.println("B");
        } else if (score < 80 && score >= 70) {
            System.out.println("C");
        } else if (score < 70 && score >= 60) {
            System.out.println("D");
        } else if (score<60&& score>=0 ){
            System.out.println("不及格");
        }else {
            System.out.println("不合法");
        }
        scanner.close();
    }
}
